Punching and shearing machine



(No Model.) 2 Sheets-Sheet 1. N. KAEMPF.

PUNGHING AND SHEARING MACHINE.

No 319,978. Patented June 16, 1885.

.Zizvezeivr fifthasaes.

NITED STATES PATENT OFFICE.

NICOLAUS KAEMPF, OF TRACY, WISCONSIN.

PUNCHING AND SHEARING MACHINE.

FJPECIFICATION forming part of Letters Patent No. 319,978, dated June is, 1885.

Application filed April-14, 1885. (No model.) i

To all whom it may concern -Be it known that I, N IOOLAUS KAEMPF, of Tracy, in the county of Shawano and Stateof W'isconsin, have invented certain new and useful Improvements in Punching and Shearing Machines; and I do hereby declare that the following is a full, clear, and exact .description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to machines for shearing metal, and the purpose thereof is to simplify and improve the construction of the actuatinglever, to adapt the machine for use upon metal of different size or thickness, by impartinga different degree of throw or movement to the knife, and by combining with the operating-lever a second or compounding lever, which may be easily and quickly brought into or thrown out of connection with the knife-lever at will.

It is also my purpose to combine with the shearing mechanism a device for holding the metal to prevent the shear of the blades from displacing it, and this holder I construct in such manner that it is both adjustable and detachable.

It is a further purpose of my invention to combine with the shearing mechanism a punch operated by the shearing-lever, and to provide a simple and effective apparatus for shrinking tires, mounted upon the same stand and operated by the same lever as the punch and shear.

My invention consists in the several novel features of construction and combinations of parts hereinafter fully set forth, and definitely pointed out in the claims annexed to this specification.

Referring to the drawings forming part of this application, Figure l is a side elevation of avmachine embodying my invention. Fig. 2 is a central longitudinal section taken in a vertical plane. Fig. 3 is a plan view.-

In the said drawings, the reference-letter A denotes a strong frame or support of any suitable character. Upon its upper portion is mounted a frame, B, provided with a detachable shear-blade, G, and having a strong bearuating-lever, E, pivotally mounted upon the frame A. Fulcrumed below the said lever E is a second or helping lever, E, which may be connected with or disconnected from the lever E by means of a curved toothed bar, F,

mounted upon the helping-lever and passing through a slot, 6, in the lever E*.

In the rear of the shears G G is formed a strong jaw, G, which receives a punchingblock, H, and through a jaw, G, passes a punch, I, having a shank, t, which enters a fork, I, in a sliding block, K, which underlies the bearing D, and receives in a slot, t", a finger, i upon the bearing of thelever E. As the latter is raised and lowered the punch is reciprocated toward and from the punch-block H with great power.

In a boss, L, formed upon one side of the frame A, is mounted a holder, M, the square shank of which is supported and guided by a device, L. The upper end of this holder is in the form of a loop or yoke, N, of such size as to admit the metal to be acted upon by the shears. A nut, n, is turned upon the lower end of theshank of the holder below the boss L, thereby allowing it a certain degree of vertical movement, butpreventing its disengage-- ment.

Upon a side extension, 1?, of the frame Ais mounted a bearing, 1?, containing a pivotal axis for a lever, B. Upon the axis is mounted eccentrically a wrist-pin, R, which receives a pitman, S, connected to a sliding frame, m, upon which is pivoted a holding-cam, m, having a portion of its periphery roughened and provided with a lever, T, by which the cam is operated. Upon a stationary boss or plate, m is pivoted a similar cam, m having a lever, T. The supports to which both cams are attached are so formed that directly beneath each there is a surface, t,which,when the supports are brought together, form an arc of a circle, and furnish support for a wheel-tire which is firmly held by the cams. The tire being placed thereon when the lever B is raised and the supports separated, and the holding-cams m and on being turned down to hold it, the lever B is operated and the sup-' ports are brought together, thereby shrinking the tire easily and quickly. The lever B is provided with a socket, as also are the levers E and E to receive an extension-lever, W.

The link E is connected with the lever E by. its forked end, which receives a pin, f, passing through it and through the lever, and said link may have a series of perforations, f, to receive the bolt and permit adjustment of the shear. By the peculiar combination of, parts in this machine I obtain great power, while it is at the same time adapted to operate upon iron or other metal of varying dimensions or thickness. The tire-shrinker possesses great force and-isfully capable of being operated by a person comparatively unskilled. It can be used. with great rapidity and ease and is effective at every operation of the lever, since the cams holding thetire will bind more closely as'theshrinking strain is produced. Having thus described myinvention, wha I claim, and desire to secure by Letters Patent,

1. In a combined punching and mechanism, the combination, with the lever actuating the movable shear-blade, of an 0pshearing 1 erati ng-lever connected thereto, by a link, a helping-lever pivoted beneathsaid operating- 30 lever, and a toothed connection pivotally mounted upon the one and passing through the other, whereby the helping-lever may be engaged with and disengaged from the operatinglever, substantially as specified. 5 2. In a-combined punching and shearing machine, the combination,with the frame supporting the shear, of a holder having a loop or yoke upon its end'and adjustable vertically in its supports,whereby:the metal is support 40 ed and held during the action of the shears, substantially as specified. V

3. In a combined punching and shearing mechanism, the combination, with anoperating-lever connected with the-lever carrying 5 the shear,ofa helping-leverhavingapivotallyattached toothedarm passing through aslot in theoperating-lever, substantially as specified; I

In testimony that I claim the foregoing as 50 my own I have hereto afiixed my signature in presence of-tw-o witnesses.

' NICOLAUS KAEMPF.

witnessesz- 0. 0. WIEGAND, HERMANN S'rRU'rz, 

